Fuel supply device of gas turbine engine

摘要

In a fuel supply device of a gas turbine engine of the present invention, a fuel divider 66 includes a fuel entrance E1 into which the fuel supplied from a collecting fuel passage 63 is introduced; a pilot port 76 connected to the pilot fuel passage 64; a main port 77 connected to the main fuel passage 65; a pilot port needle valve element 101 which adjusts an opening degree of the pilot port 76; a main port needle valve element 102 which opens and closes the main port 77; and a drive element 100 which is actuated according to the fuel pressure at the fuel inlet E1 to drive the pilot port needle valve element 101 and the main port needle valve element 102.

主权项

1. A fuel supply device of a gas turbine engine, which supplies fuel to a combustor including a pilot burner and a main burner; the fuel supply device comprising:
a pilot fuel passage through which the fuel is supplied to the pilot burner; a main fuel passage through which the fuel is supplied to the main burner; a collecting fuel passage through which the fuel is supplied to the pilot fuel passage and to the main fuel passage; and a fuel divider which divides the fuel supplied from the collecting fuel passage to feed the fuel to the pilot fuel passage and to the main fuel passage; wherein the fuel divider includes:
a fuel entrance into which the fuel supplied from the collecting fuel passage is introduced;a pilot port connected to the pilot fuel passage;a main port connected to the main fuel passage;a pilot port needle valve element which adjusts an opening degree of the pilot port;a main port needle valve element which opens and closes the main port; anda drive element which is actuated according to the fuel pressure at the fuel entrance to drive the pilot port needle valve element and the main port needle valve element;wherein when the fuel pressure at the fuel entrance is not higher than a predetermined value, the fuel is supplied only to the pilot fuel passage; andwhen the fuel pressure at the fuel entrance is higher than the predetermined value, the fuel is supplied to the pilot fuel passage and to the main fuel passage.